Improved apparatus for bending tire



@stent @wird .lOl-1N METZGAR, OF RANCHO GAR, PENNSYLVANIA.

i Letters Patent No. 91,252, dated .Tune 15, 1869.

MPROVED APPARATUS FOR IBENDING- TIRE.

The Scheule referred to in these Letters Patent and making part of the same.

To all whom, 4'if ma/y concern:

Be it known that I, JOHN METZGAR, of Rancho Gap, in the county of Clinton, and in the State of Pennsylvania, have invented certain new anduseful Improvements in Tire-Bending Machines; and do here-v b'y declare that ,the following is a full, clear, and exact description thereof, reference being had to the accompanying drawing, making a part of this specification, in which- Figure 1 is a plan or'top view of my tire-bending machine, and

Figure 2 is a vertical, longitudinal section of the same, on the line a: x of fig. 1. v

Letters of like name and kind refer to like parts in each of the figures. y

This Vinvention consists in the adjustable frames carrying the lower rollers, and in the general construc-v tion, arrangement, andcombinatiou of parts, as hereinafter more fullydescribed. Y

In this machine, the lower rollers are journalled in bearings in sliding frames, which are moved longitudinally, by means of screws, to adj ust said rollers to and from a centralupperroller, which is operated through the medium of a lever, pawl, and ratchetwheel.

In the annexed drawing- A represents the bed of the machine, von which are placed ways B B, for the sliding.,r frame.

Over the waysB B, are constructed housings', C C, adapted to receive and partially enclose the side-pieces D D of the-adjustable frames.

These side-pieces D D, rest on the ways B- B, and are connected together near their outer ends by transverse bars E E.

'The lower rollers FF,- pass through slots G G,'in`

the inner faces of the' housings C G, and rest in suitable bearings in the side-pieces D D of the adjustable frames, as shown by the dotted lines.

As means for adjusting the frames which carry the lower rollers, I employ screws H H, swivelled in standards I I, rising from the bed A, and working through the transverse bars E E, which connect the sides D D of the adj ust-able frames. These screws are preferably made or provided with crank-handles, as shown.

The upper-roller J, is mounted in fixed bearings, in the centre of the housings O O.' One ofthe journals,

K, of said roller, extends, through the housing, and has secured thereto, by means of a key, a ratchetwheel L, the teeth of which are engaged by a pawl, M, pivoted to a hand-lever, N, which isin turn pivoted upon the outer end of the journal K. The roller J, it

may be stated, can he made with its surface plain or corrugated, as may be found most desirable. The operation of this device is as follows:

The lower rollers are adjusted in the manner de scribed, either toward or from the central roller, according to the diameter which it is desired the tire shall he when. nished, and the tire-blank passed between said rollers, resting on the lower ones. The tire-blank may be inserted either before or after the adjustment ofthe rollers, but in either instance, the bar being in place between said rollers', the hand-lever is operated up and down, causing the upper roller to be partially rotated aty each downward movement, and the tireblank correspondingly passed between said upper and the lower rollers, by which means said blank is bent to any circle. desired.

This machine is both simple and practical, as will be obvious. be used for forming tires of all sizes in ordinary use., and is comparatively inexpensive, as wel as strong and durable, being constructed, preferably, entirely of casteiron, with the exception of the hed.

Having thus fully set forth the nature and merits of my invention,

What I claim as new, and desire to secure by Letters Patent, isv The arrangement of the adjustable frames D D and E E, rollers F F, and screws H H, substantially as and for the purpose shown and described. y

Also, the combination of the lower rollers F F, moi'- able frames D D and E E, adjusting-screws H H, upper rollers J ratchet-wheel L, pivoted pawl M, and lever N, the slotted housings C C, and ways B B, all operating substantially as herein shown, and arranged upon a bed, A, for the purpose set forth.

In testimony that I claim the foregoing, I have hereunto set my hand, this 29th day of March, 1869.

JOHN METZGAR'.

Witnesses:

JOHN SALLADOR, A. C. OHATHAM.

It is effectivelyand easily operated, canl 

